Mid century lighting designer Paavo Tynell's Counterbalance pendant light Model No. A 1942 was made by Idman Oy, circa 1950s. This is an adjustable ceiling light made of a brass canopy and counterweight with a white enameled metal bell shaped reflector (9.75" diameter x 11.75" height) and convenient brass ring for raising and lowering. Impressed maker's mark "Idman" on the bracket.
(Literature: "Lamps and Lighting Fixtures : Designed by Paavo Tynell", Finland House (Firm / Author), New York 1950. Pendant light model no. A 1942 is shown on pg. 8, Image: 10. Idman Decorative Lighting Catalog," Idman Oy, No. 142, Helsinki, 1958. Pendant light model no. A 1942 is shown on pg. 83, Images: 10 -11)
Image 12: Paavo Tynell (Finnish, 1890 - 1973) from "High Lights of a Lighting Genius." Modern Living, LIFE Magazine, December 1960, pg. 57.